Grain-separator.



No. 868,412. PATENTEDYOGT. 15, 1907.

- W. CLEMENT. GRAIN SBPARATOR.

APPLICATION FILED 11.36.24, 1906 l MT ZZ wwzimw e, By 72M X. I

1m; NORRIS PETERS cm. WAsumaruu, D. c.

PATENT ()FFICE,

WALTER CLEMENT, OF ADRIAN, MICHIGAN.

GRAIN-SEPARATOR.

Specification of Letters Patent.

Patented Oct. 15, 1907.

Application filed December 24,1906. Serial No. 349,260.

To all whom it may concern:

Be it known that I, WALTERCLEMENT, a citizen of the United States,residing at Ach'ian, county of Lenawee, State of Michigan, have acertain new and useful Improvement in a Grain-Separator, of which thefollowing is a specification, reference being had to the accompanyingdrawings, which form a part of this specification. v

My invention has for its object to provide a grain separator, the samebeing more especially designed for separating sand vetch from wheat, ryeand analogous grain.

It is well understood that the seeds of the sand vetch are black andround and of varying sizes, and that owing to their color they maymaterially injure flour unless they are separated from the grain beforeit is ground. Moreover, the seeds of the sand vetch are deemed ofspecial value commercially and for this reason also it is very desirableto provide means for separating the same from the grain. The specificgravity is practically the same as that of other grain, so that it hasbeen found difficult or practically impossible to accomplish theseparation by water, while also for the same reason it has been-foundquite impracticable to separate the sand vetch seed from other grain byan air blast. Hitherto, it is believed, no satisfactory means have beendevised for screening the two kinds of seeds.

My present invention is therefore designed to overcome this difficultyand to provide efficient means whereby the sand vetch seed may bereadily separated from other grains in a simple and ready manner.

I carry out my invention as more fully hereinafter described and claimedand illustrated in the accompanying drawings, in which,

Figure l is a view in longitudinally vertical section illustratingfeatures of the invention. Fig. 2 is a plan view showing features of theinvention. Fig. 3 is a detail view of one of the tongued bars inperspective. Fig. 4 is a detail view of the transverse bar at the footof the apron.

In the accompanying drawings I have shown a couple of rotatable rollersindicated at a, a, over which travels an endless apron indicated at b,any desired mechanism being employed to move the apron. The apron isarranged to move on a suitable angle to the perpendicular, asillustrated in Fig. l. A support 0 is located underneath the upper orworking surface of the apron. Adjacent to the upper surface of the apronand at the foot thereof is a transverse bar indicated at d, a series ofbars 6 extending at right angles to the bar d longitudinally of thetravel of the apron, or: in other words extending lengthwise of themovement of the apron.

The bars e are preferably made of metal and have a series of tongues fstamped out therefrom on the lower edge thereof, said tongues beingpressed away from the body of the bar preferably of a curved form,leaving corresponding orifices at the lower edge of the bar indicated ati. The bars 6 are preferably arranged in pairs forming a narrow channelbetween each pair as indicated at g, said channels extending lengthwiseof the movement of the apron. The bars of each pair are also preferablyseparated more widely apart to form intermediate spaces between thepairs of tongued bars indicated at h.

The tongues of each pair of bars, as will be seen from the drawings, areturned outwardly or in opposite directions, the adjacent tongued bars oftwo corresponding pairs having their tongues projecting into the spacesh, the spaces g being free from the tongues and opening at their lowerextremities preferably through the transverse bar cl, the bar d beingformed with openings indicated at j in alinement with the lower ends ofthe spaces g, so that any seed passing downward in the spaces g may bedischarged through the openings j. The spaces 7 9 also, it will beobserved, communicate through the openings 71 into the adjacent spacesit. Any suitable feeding mechanism may be employed to feed the mixedgrain into the spaces or channels h at the lower ends thereof. Theoperation of the device will now be understood. The traveling aprontends to carry upward the grain fed into the lower ends of the channelsit. The grain which is being carried upward thus is thrown from side toside in the channel h between the tongued bars, the tongues of said barsprojecting into the spaces or channels h deflecting the grain. Theopenings 1' in the lower edges of the bars a are of a size to permit thevetch seed passing therethrough and into the adjacent channels 9. Thevetch seed being round and smooth, resembling common shot in form willreadily fall back and find escape from the channels h though theopenings i in the tongued bars and into the passage ways 9. The passageways 9 being without any deflecting tongues, the vetch seed readilyfalls back and down to the lower ends of said passage ways, findingtheir exit through the openings j in the transverse bar d at the foot ofthe apron.

The grains of wheat rye or oats with which the vetch seed is mixedaverage two or three times as long as they are thick, and when theystart to roll down they are sure to swerve around enough to be carriedup and out. In actual practice but a very small per cent of the kernelsof grain find their way out with the vetch seed. The grains of wheat,etc., being of longer form are effectually prevented from dropping back,being caught against the tongues and carried forward and eventually overthe upper end of the apron.

What I claim as my invention is:

1. A grain separator comprising a rotatable apron, a support under theworking surface of the apron, tongued bars extending lengthwise of thetravel of the apron formed with openings at the lower edge of the bars,the tongues of two adjacent bars being turned in opposite directions.

2. A grain separator comprising a rotatable apron; a support under theworking surface of the apron, tongued bars extending lengthwise of thetravel of the apron, said bars arranged in pairs forming channels andhaving" the tongues of each pair turned outward in opposite directions,

and additional channels between each pairof' bars into' which thetongues of the adjacent bars project.

A grain separator comprising a rotatable apron, a support under theworking surface of the apron, tongued bars extending lengthwise of thetravel of the apron, said bars arranged in pairs forming unobstructedchannels and having the tongues of eaclr pair turned'ontward in oppositedirections, additional channels between each pair of bars into which thetongues of the adjacent bars project, and a transverse bar at the footof the apron, said transverse bar formed with openings registering withthe un0bstructed' channels between the bars of each pair.

4. A grain separator comprising a rotatable apron, a support under theworking surface of the apron, bars ex tending lengthwise of the travelof the apron having tongues turned away from the body of the bar at thelower edge thereof and forming openings at the lower edge of the bar,said bars arranged in pairs forming an unobstructed channel between thebars of each pair and adjacent unobstructed channels into which thetongues of said bars project, the Obstructed channel and the obstructedchannels 7 communicating through the openings in said bars.

In testimony whereof, I have signed this specification in the presenceof twosubscribing witnesses.

WALTER CLEMENT.

Witnesses:

.T. J. AUCuAMmUGn,-, CI-ms. HUMPI'IREY.

